Hi @MattisB,
Thanks for writing in! I have inspected your site and I can see that you are using Cornerstone 3.2.5. On the other hand, you are still using X theme 4.6.2. Please be advised that X Theme 6.3.1 and Cornerstone 3.3.1 are now available in automatic updates! This release contains fixes for several issues so be sure to check out the changelog (https://theme.co/changelog/). Please do update to the latest version. After doing the updates, always remember to clear all caches when updating so that the code from the latest release is always in use. This will help you to avoid any potential errors.
Please let us know how it goes.